Files
cpython/Include
Sam Gross cd52172831 gh-145685: Improve scaling of type attribute lookups (gh-145774)
Avoid locking in the PyType_Lookup cache-miss path if the type's
tp_version_tag is already valid.
2026-03-12 13:30:36 -04:00
..
2026-03-10 16:40:10 +02:00

The Python C API
================

The C API is divided into these sections:

1. ``Include/``: Limited API
2. ``Include/cpython/``: CPython implementation details
3. ``Include/cpython/``, names with the ``PyUnstable_`` prefix: API that can
   change between minor releases
4. ``Include/internal/``, and any name with ``_`` prefix: The internal API

Information on changing the C API is available `in the developer guide`_

.. _in the developer guide: https://devguide.python.org/c-api/